The studies on low dose oral minoxidil from the last 5-10 years show a high tolerance and response rate. There has only been one small study comparing oral vs topical but in women only. The side effects typically intensify as dosage increases. There are countless reports of facial aging effects in the forums but no reports of it yet in any published studies nor confirmation from any doctors who have a long history of prescribing it. Draw your own conclusions.
I suggest you use the search function here and spend some time reading as oral minoxidil has been discussed/debated many times. Good luck.
